WASHINGTON — Large portions of U.S. government are on the verge of shutting down Saturday in a congressional standoff over immigration-enforcement tactics after the killings of two U.S. citizens in Minneapolis.

Kristi Noem retains President Donald Trump's full support despite Democratic criticism following fatal shootings during immigration crackdown operations in Minneapolis Twin Cities area.

The president's concessions to Democrats prompted pushback from some Senate Republicans, delaying the final votes.

Tom Homan, who took over leadership of the surge in Minneapolis, says he is working on a plan to reduce the force of federal agents in the Twin Cities.

Secretary of Homeland Security Kristi Noem is facing internal scrutiny after the fatal shooting of Alex Pretti, multiple sources told CBS News, but she is expected to keep her job.

The preliminary assessment from Customs and Border Protection makes no mention of Alex Pretti attacking officers or threatening them with a weapon — as the administration first described the incident.